Spiral coil for fastening wire-terminals.



P. P. NUNGBSSER. SPIRAL COIL FOR FASTENING WIRE TERMINALS.

' APPLIOATIOH FILED 11311139, 1911.

1,023,270. Patented Apr. 16, 1912.

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W wn 15' BY W AT'T'YS PHILIP P. NUNGESSEB, OF CLEV ELAND, OHIO, ASSIGNOR TO THE NUNG-ESSEB ELEC- TRIC BATTERY COMPANY, OF CLEVELAND, OHIO, A CORPORATION.

SPIRAL COIL FOR FASTENING WIRE-TERMINALS.

To all whom. it may concern:

Be it known that I, Pnmlr P. NUNGESSEB,

citizen of the United States residing at Cleveland, in the county of uyahoga and State of Ohio, have invented certain new and useful Improvements in Spiral Coils for Fastening lire-Terminals, of which the following is a specification.

This invention relates to a spiral coil for fastening wire terminals, all substantially as shown and described and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a sectional elevation of the upper portion of a primary battery cell of the dry type with my improved wire fastening device. fixed thereon. Fig. 2 is a side elevation of the cell and of the fastening device shown in Fig. 1. Fig. 3 is a detail of the device itself and somewhat enlarged as compared with Fig. 1 but otherwise as shown in said figure. Fig. 4 is an enlarged side elevation of the device corresponding to Fig. 2 in other particulars, except that the coil is contracted and the notches are brought into line to lay the wire therein. Fig. 5 is an edge elevation corresponding to Fig. 4, with the coils closed and the notches or recesses in the edge clearly shown as in line across the coil. Fig. 6 is a Elan view of one form of a blank which has een struck up and is ready to be bent or wound into the spiral form seen in the other views. Figs. 7 and 8 show a modified form of blank and coil as hereinafter fully described.

The invention resides in the spring coil indicated by C in Figs. 1 to 5 and by C in Fig. 7, the difference between the two coils being most clearly seen in the blanks, Figs. (3 and 8. In each case the coil is produced by'the requisite bending or windin of a strip of spring sheet metal denoted y the blanks B and respectively. These blanks have base ends or terminals 1) and I) each, and are each provided with a series of notches or recesses 2 and 3 respectively in their outer edge, or, to express it difierently, in the edge opposite that which carries the base portion 6 or Z). As to these base portions or ends, it need simply be observed that they may be shaped or fashioned into any desired form according to the place here they are to be attached, and in any l'tlrt become the fixed supporting medium for Specification of Letters Patent. Application filed June 9, 1911. Serial No. 632,141.

Patented Apr. 16, 1912.

the coil. When the coil is completed the said end extends laterally from the middle or center and the coils or convolutions of the device are around the same while the other extremity 4 is free and *bent outward and adapted to bear the thumb or finger upon to contract the coil so as to bring all said notches into accord or alinement, as seen in Fig. 5 and thus enable a wire terminal a to be laid therein to effect its enga ement. This disposition or arrangement 0 the several notches in the edges of the blanks is such as to bring said notches into more or less staggered relation with each other when the coil is normal or open, as in Fig. 3, but their relation also issuch that they can be brought directly opposite each other in each and all the coils by,pressing on extremity 4 and compressing or contracting the coil sufiiciently to e ect this relation, as seen in Figs. 4 and 5.

The shape of the several notches is hardly material so long as they are such as to firmly engage a wire therein, and the coils naturally seek to spring apart again as soon as pressure upon the end 4 is relieved.

Any suitable width of blank stock ma be used and, if preferred, the surplus stoc c bet-ween the recesses or notches 3 may be removed. This would leave lugs or teeth as walls at the ends or sides of the notches as seen at 6, Fig. 8.

Obviously the foregoing principle of construction may be extended or varied consid-' erably and yet keep within the spirit of the invention, and in this connection I refer to a companion application, SE1. No. 632,142, which embodies the invention in still another form, the coil in this case being provided with coincident holes through the same through which a wire is adapted to be threaded from either side and to which aplication reference is made for scope of the invention claimed.

The foregoing construction in any case is such that the wire can be laid directly across the edges of the coil or spring and engaged in said notches or between said teeth, lugs or projections instead of threading through otherwise closed holes as in the companion case above referred to. Of course the said notches need to come into line or coincidence or engagement therein cannot be effected, and this is accomplished by pressure upon finger tip 4 exerted and increased until aline ment of the. engaging portions b'e'accomplished. V i

The term notches herein is intended to comprehend open edge spaces of greater or less width, such for example as seen at 2 and 3 in Figs. 6 and 8, the latter view having elongated notches between the projections 6 but whichserve to lay the wire in or across while the wire is engaged by the projections 6 the same practically as by the rejections which define the narrower notc es or recesses. v

Two or more convolutions of the coil may be employed as preferred, but as. many as five are shownin this case. The coil has enough open space between turns or convolutions to bring all notches into line when contraction occurs, the action being the same as in a clock spring.

What I claim is:

1. A device to fasten wires consisting of a spring metal coil normally open and provided with wire en agin portions at the edge of each convolu ion 1; reof and havin in position and a projection at the other end adapted to be engaged by hand to contract 7 the coil.

2. A device to .fasten wire terminals consisting of a metallic coil having a plurality of convolutions with open notches in corresponding edges adapted to receive the wire to be fastened. I

3. A device to fasten wires consisting of a coilof otherwise fiat spring metal having exposed terminals and wire engagin por tions at two places in the edge of can convolution of the coil.

In testimony whereof I aflix in presence of two witnesses.

PHILIP P. NUNGESSER.

my signature Witnesses:

E. MJFISHER, F. C. MUssUN.

. g 25 a pro ection at one end to be rigidly fastened- 

